A man who wills commands something within himself that renders obedience, or that he believes renders obedience.

That which does not kill us makes us stronger.

Objection, evasion, joyous distrust, and love of irony are signs of health; everything absolute belongs to pathology.

The poison by which the weaker nature is destroyed is strengthening to the strong individual and he does not call it poison.

There would be no sunshine in society if the born flatterers, I mean the so-called amiable people, did not bring it in with them.

What someone is, begins to be revealed when his talent abates, when he stops showing us what he can do.

The criminal is quite frequently not equal to his deed: he belittles and slanders it.